Trade and other receivables (Tables)

12 Months Ended

Dec. 31, 2019

Receivables [Abstract]

Summary of Trade Receivables and Other Receivable

	2019			2018
Trade receivables, gross	$	20,024,916		$	19,373,260
Other receivables	$	50,756			141,141
Less:  allowance for doubtful accounts	$	(34,384	)		(46,598	)
	$	20,041,288		$	19,467,803
Anesthesia segment – trade receivables, gross	$	19,081,177		$	18,199,847
Product segment – trade receivables, gross		943,739			1,173,413
	$	20,024,916		$	19,373,260